O2 Learn are creating Britain's biggest classroom

They are creating a library of revision lesson from great teachers across the country. Resources are for students and teachers and cover a wide range of subject areas.

https://www.o2learn.co.uk/index.php

The Faculties provides free, short films of university lecturers speaking on topics from the A-level curriculum. All our topics are provided by the major exam boards: AQA, Edexcel and OCR. In bringing the expertise of research scholars into the classroom, we stretch and challenge students, help them excel in their assessments, inspire deeper learning and smooth the transition from school to university.

Maths, English, Biology, Chemistry, History and Psychology.

 http://www.thefaculties.org/